Brockelmann,
Carl. Geschichte der arabischen litteratur.2
vols. plus 3 suppl. vols., Leiden, E.J. Brill, 1943-. [GAL.]
MELA also published Guide to Using Carl Brockelmann's
Geschichte der Arabischen Litteratur; Ghazali is in: g, I: 534-546 (PDF:
1943); s, I: 744-756. (PDF:
1937). There were two translations of this book published. One by
dar al-maʿarif in Egypt which we have a complete copy in pdf files.
Download all the files found in this directory to get the full
benefit of the cross references tags among the
pdf
files.

Sezgin,
Fuat. Geschichte des arabischen Schrifttums. 12 vol.s, Leiden,
E.J. Brill, 1967-. Volumes organized by subject, covering Arabic
literature up to about 950 CE. [GAS.] This book was translated into
Arabic which we have a complete copy in pdf files. Download
all the files found in this directory to get the full benefit of the
cross references tags among the pdf files. As
this book is still in progress the translation is always behind the
published volumes.

Here is
a list of 608 Ghazali manuscripts that are in Turkish Libraries. The
list is in excell format with the local call numbers. As it is only
a list it only lists the name of the title of the Manuscripts in
Turkish and in Arabic. There are 2 by his brother Ahmad and 32 by
Shi'hab al-din (d. 1123).
Excel file. This file is based on a search of Union Catalog of
Turkish manuscripts. The Turkish mss website that I used to
generate this list has gone offline! However I believe that it has
re-surfaced in another format elsewhere and I just can't find it.

Revolution by the Ream: A
History of Paper by
Jonathan M. Bloom
(link) (Aramco World: May/June 99: vol. 50/No.3 , pp: 26-39) . PDF
version from the issue. Prof. Bloom has writen a book on a similar and
related topic, Paper before print, for more on Paper research see this
on Arabic Paper.

Note some
libraries (research of course!) have as much as 137 different catalogs.
Firestone library in Princeton University has a room full of them in
graduate Near East study room. (B Level). University of Michigan
CMENA has a
list as well (PDF).
A general online rule if the catalog is UM and is out of copyright
there is a good chance you can find it on
google books. Here is a sample listing
in no particular order of importance:

Türkiye yazmalari toplu katalogu = The union catalogue of manuscripts in Turkey /
T. c. Kültür Bakanligi Kütüphaneler Genel Müdürlügü. Ankara : Kütüphaneler Genel Müdürlügü, 1979-.
In volume 5, p. 616, it lists the following numbers for al-Ghazali: 67,
514, 544, 550-551, 574-575, 1397-1398, 1433, 1455, 2519, 2627, 2630,
2654-2655, 2674, 2725, 2726, 2744-2757, 2783, 2817, 2878, 2880, 2883,
2928-2929, 4078, 4116. For example: 4078 is qasidah al-munfirajah
and 4116 sharh janat al-Isma'. Not sure they are authentic works but
you'll find them listed in catalogs. N. B. This is also
available in facimile pdf online. Also noted is a website that should
supercede this as the Turkish gov't sponsered digitization effort is
underway. I have tried very often to register with the site to no avail.

Mohammed
E. Mohgadam and Yahya Armajani, under the supervision of Philip K.
Hitti, Descriptive Catalog of the Garrett
Collection of Persian, Turkish and Indic Manuscripts Including Some
Miniatures, Princeton Oriental Texts, volume 6 (Princeton:
Princeton University Press, 1939). N. B. Princeton University Library: has a grant to convert the above catalogs
into its online catalog system, as of this writing the work is still
in progress. Some of the entries are already in the
online
catalog.

British
Library.Oriental and India Office Collections. A classified handlist
of Arabic manuscripts acquired since 1912 edited by R. Vassie.
London: British Library, 1995-.

Great
Britain. India Office Library. A catalogue of the Arabic manuscripts
in the Library of the India Office, by Otto Loth [et al] London,
1877-1940.

Great
Britain. India Office Library. Catalogue of two collections of
Persian and Arabic manuscripts preserved in the India office library;
by E. Denison Ross, and Edward G. Browne. London, Eyre and
Spottiswoode, 1902.

Krek,
Miroslav. A catalogue of Arabic manuscripts in the Oriental Institute
of Chicago. New Haven, American Oriental Society, 1961.

Leon
Nemoy, Arabic
manuscripts in the Yale University Library, compiled by Leon Nemoy.
New Haven, 1956. Series: Transactions of the Connecticut Academy of
Arts and Sciences, v. 40 p. 1-273. 273 p. facsims. N.B. Entries
from the catalog is being incorporated into the libraries online
catalogs.

Atiya,
Aziz Suryal, The
Arabic manuscripts of Mount Sinai; a hand-list of the Arabic
manuscripts and scrolls microfilmed at the library of the Monastery
of St. Catherine, Mount Sinai. Foreword by Wendell Phillips. Baltimore, Johns Hopkins Press [1955] Series:
Publications of the American Foundation for the Study of Man ;
v. 1. xxxiv, 97 p. illus., facsims. 29 cm.